Time to revive an old thread. I've got the vivitar branded version of the non-macro, I think the same as what you're describing. mount came off with 4 screws, rear element came out easy, just rotated a metal tube off. Focus ring came off with a piece of glass still in it, two elements and two metal placing rings came out, but that's all I got. now what. How to get to the aperture blades? I don't see spanner slots, I don't see anymore screws, I don't see an obvious piece to unscrew.
Also... uh, anyone have a diagram of the elements? I, uh, well, when i pulled the focus ring out, the two inner lenses popped out and I don't know the orientation...
The lens is identical to the one in this review:
https://www.pentaxforums.com/userreviews/sears-135mm-f2-8-auto-multicoated.html